Bluetooth issue - is this normal?

So, I picked up the Nokia BH-905i bluetooth headset - cost me a pretty penny, but I absolutely love them. However, bluetooth calling is a train wreck with my Titan II. Speaking through them works (they have a mic built in), but I can not hear anything through bluetooth. Note, this is only on phone calls - music plays fine.

What's sad, is my old 8 year old flip phone works perfectly with bluetooth on this headset.

Is this normal for the Titan IIs? Anybody else have weird issues like this with bluetooth calling?